From patchwork Thu Jan 7 16:33:04 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Santosh Shukla X-Patchwork-Id: 9771 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id E95F5C168; Thu, 7 Jan 2016 17:34:31 +0100 (CET) Received: from mail-pa0-f49.google.com (mail-pa0-f49.google.com [209.85.220.49]) by dpdk.org (Postfix) with ESMTP id 7AFEDC13E for ; Thu, 7 Jan 2016 17:34:30 +0100 (CET) Received: by mail-pa0-f49.google.com with SMTP id uo6so244123023pac.1 for ; Thu, 07 Jan 2016 08:34:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mvista-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=H6cSC0KobDmLcAZbKTz87g2ieo8lf9tiLwPiJy1v9cs=; b=vUqjoTj76tENkl8Q8k8YqUh/wSa92reYXR0OnfhplpBNUHSKWwV0Pb+h+Yzkvp48tM c2Gq64rdLs28hmJfJ+gktIjnMhS4jPpkn06htZBMABDaFOAsVe86G8Jx5lfuZ94Ur3RE VyW3hyxSlCY0cn1TxiQvya6M6YOU4OR3JQyHkDeYyf5PXZw8/OGfhFyew93sjUul3BGk 7X2ku18scimgRQqGbo6QH8k4XGhrpzZGq33EzKFyDtuL71xkS/dmytq4vmraZY9uZeWY 00o4w6FhOhijlmKdzb73xks4mhqe2cO5cJEA9TlmjqaR64iZUfTlCGChrnFkwQpeDevn g9ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=H6cSC0KobDmLcAZbKTz87g2ieo8lf9tiLwPiJy1v9cs=; b=jbhpPmN7G6wnoXn4ss9NFV2hfW7c79wskfAUZvIZdz3CMv33JQeg1kkWoc5UdfgMFK 11eYancf4zIK2Lw6mEhmEhguiUh5ce7yJ1lGFJBX0UoWH69BwN5RMfA5y2cSQZ9ZHfoe EIZ8iggeMCxkTyPvwpRDHpNrpzBRCultCpSBFDE3WxzBaJt2rrYtyUt3uquBQJQtu5iz ElrQdr2rroMg4jjZwKU4MrZJ4vnKplaRJhEGjPRQXYZO/CJhR+vl2Nnezh3A+pqDCoQf dYwF9FlqJ4KH7RsvLtUzbrBK3t/GSe86AKG2t+wB4Y171EpEIllk0TTDG8bxkV8tqi0/ bG8w== X-Gm-Message-State: ALoCoQn6LLIJV1Tj4EoIeKTrO/sr6r3RzkE1u1fg92Y/eD7n5VK+okembY1JCC7nXgyT7qOAjSWIgV17iJMw5OedcbJPSAvTCQ== X-Received: by 10.66.237.66 with SMTP id va2mr95463410pac.87.1452184469894; Thu, 07 Jan 2016 08:34:29 -0800 (PST) Received: from santosh-Latitude-E5530-non-vPro.mvista.com ([111.93.218.67]) by smtp.gmail.com with ESMTPSA id yn8sm159454163pac.32.2016.01.07.08.34.26 (version=TLS1_1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 07 Jan 2016 08:34:29 -0800 (PST) From: Santosh Shukla To: dev@dpdk.org Date: Thu, 7 Jan 2016 22:03:04 +0530 Message-Id: <1452184390-5994-8-git-send-email-sshukla@mvista.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1452184390-5994-1-git-send-email-sshukla@mvista.com> References: <1452184390-5994-1-git-send-email-sshukla@mvista.com> Cc: Rakesh Krishnamurthy , Rizwan Ansari Subject: [dpdk-dev] [PATCH v3 07/12] virtio: vfio: add api support to rd/wr ioport bar X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" For vfio case - Use pread/pwrite api to access virtio ioport space. Signed-off-by: Santosh Shukla Signed-off-by: Rizwan Ansari Signed-off-by: Rakesh Krishnamurthy --- drivers/net/virtio/virtio_vfio.h | 146 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 drivers/net/virtio/virtio_vfio.h diff --git a/drivers/net/virtio/virtio_vfio.h b/drivers/net/virtio/virtio_vfio.h new file mode 100644 index 0000000..fd94b30 --- /dev/null +++ b/drivers/net/virtio/virtio_vfio.h @@ -0,0 +1,146 @@ +/* + * BSD LICENSE + * + * Copyright(c) 2015 Cavium Networks. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#ifndef _VIRTIO_VFIO_H_ +#define _VIRTIO_VFIO_H_ + +#ifdef RTE_EAL_VFIO +#include +#include +#include + +#include "virtio_logs.h" + +static inline void ioport_inb(const struct rte_pci_device *pci_dev, + uint8_t reg, uint8_t *val) +{ + if (rte_eal_pci_read_bar(pci_dev, (uint8_t *)val, sizeof(uint8_t), reg, + 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +static inline void ioport_inw(const struct rte_pci_device *pci_dev, + uint16_t reg, uint16_t *val) +{ + if (rte_eal_pci_read_bar(pci_dev, (uint16_t *)val, sizeof(uint16_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +static inline void ioport_inl(const struct rte_pci_device *pci_dev, + uint32_t reg, uint32_t *val) +{ + if (rte_eal_pci_read_bar(pci_dev, (uint32_t *)val, sizeof(uint32_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +static inline void ioport_outb_p(const struct rte_pci_device *pci_dev, + uint8_t reg, uint8_t val) +{ + if (rte_eal_pci_write_bar(pci_dev, (uint8_t *)&val, sizeof(uint8_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + + +static inline void ioport_outw_p(const struct rte_pci_device *pci_dev, + uint16_t reg, uint16_t val) +{ + if (rte_eal_pci_write_bar(pci_dev, (uint16_t *)&val, sizeof(uint16_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + + +static inline void ioport_outl_p(const struct rte_pci_device *pci_dev, + uint32_t reg, uint32_t val) +{ + if (rte_eal_pci_write_bar(pci_dev, (uint32_t *)&val, sizeof(uint32_t), + reg, 0) <= 0) { + PMD_DRV_LOG(ERR, "Can't read from PCI bar space"); + return; + } +} + +#define VIRTIO_READ_REG_1(hw, reg) \ +({ \ + uint8_t ret; \ + ioport_inb(((hw)->pci_dev), reg, &ret); \ + ret; \ +}) + +#define VIRTIO_WRITE_REG_1(hw, reg, val) \ +({ \ + ioport_outb_p(((hw)->pci_dev), reg, (uint8_t)val); \ +}) + +#define VIRTIO_READ_REG_2(hw, reg) \ +({ \ + uint16_t ret; \ + ioport_inw(((hw)->pci_dev), reg, &ret); \ + ret; \ +}) + +#define VIRTIO_WRITE_REG_2(hw, reg, val) \ +({ \ + ioport_outw_p(((hw)->pci_dev), reg, (uint16_t)(val));\ +}) + +#define VIRTIO_READ_REG_4(hw, reg) \ +({ \ + uint32_t ret; \ + ioport_inl(((hw)->pci_dev), reg, &ret); \ + ret; \ +}) + +#define VIRTIO_WRITE_REG_4(hw, reg, val) \ +({ \ + ioport_outl_p(((hw)->pci_dev), reg, (uint32_t)(val));\ +}) + +#else /* !RTE_EAL_VFIO */ + +#error "vfio not supported!!! pl. enable vfio config for your platform" +#endif /* RTE_EAL_VFIO */ +#endif /* _VIRTIO_VFIO_H_ */